Low sound region reproducing speaker system

Claim 1

A low sound region reproducing speaker system comprising a box closed on all its sides and having at least one sidewall, a partition wall separating the internal space of the box into two spatial portions, a pair of speakers attached to the partition wall where one of the speakers is responsive to a right stereo-phonic channel signal and the other speaker is responsive to a left stereo-phonic channel signal, one of said spatial portions having no aperture open to space external to the box and an aperture being formed in said one side wall of the box through which the other of the spatial portions communicates with the space external to the box whereby right and left stereo-phonic channel signals are reproduced individually as sounds through the pair of speakers, the sounds are mixed acoustically within the box, a sound region other than a low sound region of the mixed sounds and of a predetermined band width is attenuated by two resonant systems defined by the two spatial portions and the aperture and different in resonant frequency and only the low sound region is emitted into the external space, characterized in that the partition wall has therein a communication hole for communicating the two spatial portions therethrough with each other so that a bass reflex operation is performed by the acoustic action of the communication hole and the spatial portion with no aperture open to the external space.